Event between (523700) 14GM54 and star GA1000:18510028 with event index number of 2090142
Geocentric closest approach at 2027/10/23 04:39:44 UTC
J2000 position of star is 20:33:40.6 +11:31:37
Equinox of date position of star is 20:34:46.1 +11:36:23
Stellar brightness G=16.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 149 degrees from the moon.
Moon is 45% illuminated.
TNO apparent brightness V=22.1
[RECON map]
TNO is 29.7 AU from the Sun
and 29.5 AU from the Earth.
The TNO is moving 18.7
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 106 seconds.
The 1-sigma cross-track error in the shadow position is
3073 km.
The sky-plane scale is
21390.9 km/arcsec.
The TNO has an absolute magnitude Hv=7.2
Diameter=229.1 km assuming a 5% albedo -- 11.9 sec chord
Diameter=93.5 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is 3:2E+6:4II
Star training set for 523700, (2027/10/23 04:40UT) Object RA Dec mag sep mel Deneb 20:42:22.9 +45:22:51 1.3 33.79 116 Tarazed 19:47:34.9 +10:40:58 2.7 11.67 148 2Eps Del 20:34:32.5 +11:23:58 4.0 0.25 150 PPM 138507 20:32:31.6 +11:21:16 7.9 0.66 150 2Eps Del 20:34:32.5 +11:23:58 4.0 0.25 150 523700 20:35:00.2 +11:37:25 16.4 149 Positions are for equinox of date
This table contains the target star visibility for the RECON
network. The observing range has been set to a maximum of
5.0 sigma about the mid-time.
The median site spacing is 12.2 km
RECON observability=1.0 and success probability=9.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| CU-SBO | 04:37:04 | -49.7 | Dark | Down | 39.8 | 248.9 | Up | 04:27:44 - 04:46:25 | 4662 |
| Dunrhomin | 04:37:03 | -49.6 | Dark | Down | 39.7 | 248.8 | Up | 04:27:43 - 04:46:24 | 4657 |
| George/Scottsdale | 04:37:40 | -48.3 | Dark | Down | 46.9 | 248.8 | Up | 04:28:20 - 04:47:01 | 4457 |
| Yuma | 04:37:47 | -46.6 | Dark | Down | 49.4 | 247.4 | Up | 04:28:27 - 04:47:08 | 4282 |
| Patrick | 04:37:32 | -46.1 | Dark | Down | 47.8 | 245.2 | Up | 04:28:12 - 04:46:53 | 4261 |
| Lake Havasu City | 04:37:36 | -46.1 | Dark | Down | 48.5 | 245.7 | Up | 04:28:16 - 04:46:57 | 4255 |
| Laughlin/Bullhead City | 04:37:33 | -45.7 | Dark | Down | 48.4 | 244.8 | Up | 04:28:13 - 04:46:54 | 4217 |
| Calipatria | 04:37:43 | -45.7 | Dark | Down | 50.0 | 246.1 | Up | 04:28:23 - 04:47:04 | 4203 |
| Idyllwild | 04:37:41 | -44.6 | Dark | Down | 50.6 | 244.2 | Up | 04:28:21 - 04:47:02 | 4097 |
| Sleaford | 04:36:07 | -41.3 | Dark | Down | 35.1 | 239.6 | Up | 04:26:47 - 04:45:28 | 4034 |
| Beatty | 04:37:24 | -43.4 | Dark | Down | 49.2 | 240.8 | Up | 04:28:04 - 04:46:45 | 4006 |
| Wildwood | 04:37:40 | -42.9 | Dark | Down | 51.9 | 241.9 | Up | 04:28:19 - 04:47:00 | 3942 |
| Bishop | 04:37:22 | -42.0 | Dark | Down | 50.1 | 238.5 | Up | 04:28:02 - 04:46:43 | 3872 |
| Hawthorne | 04:37:16 | -41.4 | Dark | Down | 49.7 | 237.1 | Up | 04:27:56 - 04:46:37 | 3822 |
| Lee Vining | 04:37:19 | -41.2 | Dark | Down | 50.3 | 237.1 | Up | 04:27:59 - 04:46:40 | 3802 |
| Yerington | 04:37:13 | -40.8 | Dark | Down | 49.8 | 236.0 | Up | 04:27:52 - 04:46:33 | 3769 |
| Gardnerville | 04:37:13 | -40.4 | Dark | Down | 50.2 | 235.4 | Up | 04:27:53 - 04:46:34 | 3727 |
| Carson City | 04:37:10 | -40.2 | Dark | Down | 50.1 | 235.0 | Up | 04:27:49 - 04:46:30 | 3717 |
| Reno | 04:37:11 | -40.1 | Dark | Down | 49.9 | 234.7 | Up | 04:27:50 - 04:46:31 | 3705 |
| Portola | 04:37:10 | -39.5 | Dark | Down | 50.2 | 233.6 | Up | 04:27:49 - 04:46:30 | 3650 |
| Cedarville | 04:37:01 | -39.1 | Dark | Down | 49.0 | 232.3 | Up | 04:27:40 - 04:46:21 | 3622 |
| Gimple | 04:37:08 | -39.1 | Dark | Down | 50.2 | 232.8 | Up | 04:27:47 - 04:46:28 | 3612 |
| Quincy | 04:37:08 | -39.1 | Dark | Down | 50.4 | 232.9 | Up | 04:27:48 - 04:46:29 | 3611 |
| Greenville | 04:37:08 | -39.1 | Dark | Down | 50.3 | 232.7 | Up | 04:27:47 - 04:46:28 | 3605 |
| PNWRO | 04:36:38 | -38.0 | Dark | Down | 45.5 | 230.0 | Up | 04:27:17 - 04:45:58 | 3565 |
| Fall River/Burney | 04:37:04 | -38.4 | Dark | Down | 50.0 | 231.3 | Up | 04:27:43 - 04:46:24 | 3547 |
| Klamath Falls | 04:36:57 | -37.7 | Dark | Down | 49.5 | 229.8 | Up | 04:27:37 - 04:46:18 | 3486 |
| Chiloquin | 04:36:56 | -37.5 | Dark | Down | 49.3 | 229.3 | Up | 04:27:35 - 04:46:16 | 3471 |
| Bend | 04:36:47 | -37.3 | Dark | Down | 48.0 | 228.7 | Up | 04:27:27 - 04:46:08 | 3465 |
| Oregon Observatory | 04:36:48 | -37.3 | Dark | Down | 48.2 | 228.7 | Up | 04:27:27 - 04:46:08 | 3461 |
| Toppenish/White Swan | 04:36:36 | -36.9 | Dark | Down | 46.0 | 227.9 | Up | 04:27:16 - 04:45:57 | 3454 |
| Maupin | 04:36:42 | -37.0 | Dark | Down | 47.2 | 228.0 | Up | 04:27:22 - 04:46:03 | 3446 |
| Sisters | 04:36:47 | -37.0 | Dark | Down | 48.0 | 228.2 | Up | 04:27:26 - 04:46:07 | 3440 |
| Okanogan | 04:36:26 | -36.5 | Dark | Down | 44.3 | 227.3 | Up | 04:27:05 - 04:45:46 | 3437 |
| Yakima | 04:36:35 | -36.7 | Dark | Down | 46.0 | 227.5 | Up | 04:27:15 - 04:45:56 | 3435 |
| Brewster | 04:36:28 | -36.5 | Dark | Down | 44.6 | 227.3 | Up | 04:27:07 - 04:45:48 | 3434 |
| Anarchist Mountain Observatory | 04:36:22 | -36.3 | Dark | Down | 43.8 | 227.1 | Up | 04:27:02 - 04:45:43 | 3428 |
| The Dalles | 04:36:40 | -36.7 | Dark | Down | 47.0 | 227.6 | Up | 04:27:19 - 04:46:00 | 3426 |
| Wenatchee | 04:36:32 | -36.5 | Dark | Down | 45.3 | 227.2 | Up | 04:27:11 - 04:45:52 | 3423 |
| Ellensburg | 04:36:33 | -36.5 | Dark | Down | 45.7 | 227.2 | Up | 04:27:12 - 04:45:53 | 3423 |
| Manson/Chelan | 04:36:29 | -36.4 | Dark | Down | 44.9 | 227.0 | Up | 04:27:09 - 04:45:50 | 3418 |
| Oliver | 04:36:22 | -36.1 | Dark | Down | 43.7 | 226.8 | Up | 04:27:02 - 04:45:43 | 3409 |
| Penticton | 04:36:20 | -35.9 | Dark | Down | 43.5 | 226.5 | Up | 04:26:59 - 04:45:40 | 3397 |
| Kelowna | 04:36:20 | -35.8 | Dark | Down | 43.2 | 226.4 | Up | 04:26:59 - 04:45:40 | 3390 |
| Summerland | 04:36:20 | -35.8 | Dark | Down | 43.5 | 226.3 | Up | 04:27:00 - 04:45:41 | 3387 |
| Peachland | 04:36:21 | -35.7 | Dark | Down | 43.5 | 226.1 | Up | 04:27:00 - 04:45:41 | 3376 |
| Kamloops | 04:36:15 | -34.9 | Dark | Down | 43.1 | 224.8 | Up | 04:26:55 - 04:45:36 | 3306 |
| Victoria | 04:36:25 | -34.1 | Dark | Down | 46.0 | 222.5 | Up | 04:27:04 - 04:45:45 | 3185 |
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 523700, (2027/10/23 04:40UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 33.79 116 Tarazed 19:46:15.6 +10:36:48 2.7 11.67 148 2Eps Del 20:33:12.8 +11:18:11 4.0 0.25 150 PPM 138507 20:31:12.0 +11:15:34 7.9 0.66 150 2Eps Del 20:33:12.8 +11:18:11 4.0 0.25 150 523700 20:33:40.6 +11:31:37 16.4 149 Positions are for J2000
Event circumstances last updated at 2022/11/24 02:43:22 UT
Marc W. Buie, Southwest Research Institute